While Sei-Setsu was the master of Engaku in Kamakura, he required larger quarters, since those in which he was teaching were over crowded. Umezu Sei-Bei, a merchant of Edo, decided to donate five hundred ryo toward the construction of a more commodious school. This money he brought to the teacher in gold.
Sei-Setsu said, "All right. I will take it." Umezu gave Sei-Setsu the sack of gold, but he was dissatisfied with the attitude of the teacher. One might live a whole year on three ryo, and the merchant had not even been thanked for five hundred. "In that sack is five hundred ryo," hinted Umezu.
You told me that before," replied Sei-Setsu. "Even if I am a wealthy merchant, five hundred ryo is a lot of money," said Umezu. "Do you want me to thank you for it?" asked Sei-Setsu. "You ought to," replied Umezu.
Why should I?" inquired Sei-Setsu. "The giver should be thankful."